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PERF: add 'lower(title)' index on topics

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Régis Hanol 2015-11-04 00:42:19 +01:00
parent 131ae8486b
commit d56e91f44f
1 changed files with 9 additions and 0 deletions
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db/migrate/20151103233815_add_lower_title_index_on_topics.rb Normal file
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class AddLowerTitleIndexOnTopics < ActiveRecord::Migration
def up
execute "CREATE INDEX index_topics_on_lower_title ON topics (LOWER(title))"
end
def down
execute "DROP INDEX index_topics_on_lower_title"
end
end